Philemon Votsoma Faculty of Economics and Management, Garoua, Cameroon   University of Garoua, P.O. BOX – 346 Garoua Garoua, Cameroon   votsomaphilemon@gmail.com             JEL Areas: E2 : Macroeconomics: Consumption, Saving, Production, Employment, and Investment: General (includes Measurement and Data) F : International Economics